Each of L, A, Y, E, R, S and T has an exam on a different day of a week…
2026
Each of L, A, Y, E, R, S and T has an exam on a different day of a week starting from Monday and ending on Sunday of the same week. T has exam on Thursday. E has exam two days before T. Only four people have exams between A and E. Y has exam on one of the days after E. R has exam on the day immediately before L. A has exam after E. How many people have exam between L and Y?
Answer: D. Two — ConceptA one-to-one weekly schedule can be represented by seven ordered slots, Monday through Sunday, with one person in each slot. A gap of n people means…
- A.
Four
- B.
Three
- C.
One
- D.
Two
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Show answer & explanation
Correct answer: D
Concept
A one-to-one weekly schedule can be represented by seven ordered slots, Monday through Sunday, with one person in each slot.
A gap of n people means the two endpoints are n + 1 slots apart. Fixed-day and before/after clues should be placed first, followed by adjacency clues.
Application
T is on Thursday, so E, which is two days before T, is on Tuesday.
Four people lie between A and E, so their positions differ by five slots. Since A is after E, A must be on Sunday.
The unused days are Monday, Wednesday, Friday and Saturday. The only unused consecutive pair available for R immediately before L is Friday-Saturday; therefore R is on Friday and L is on Saturday.
Y must be after E and occupy an unused day, so Y is on Wednesday. S then occupies Monday.
Cross-check
The completed schedule is shown below. Thursday and Friday are the only days strictly between Wednesday and Saturday, occupied by T and R.
Day | Person |
|---|---|
Monday | S |
Tuesday | E |
Wednesday | Y |
Thursday | T |
Friday | R |
Saturday | L |
Sunday | A |
Result
Therefore, two people have exams between L and Y.